20795181 has 12 divisors (see below), whose sum is σ = 30477216. Its totient is φ = 12602920.

The previous prime is 20795179. The next prime is 20795209. The reversal of 20795181 is 18159702.

It is not a de Polignac number, because 20795181 - 2¹ = 20795179 is a prime.

It is a super-2 number, since 2×20795181² = 864879105645522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20795111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28281 + ... + 29006.

It is an arithmetic number, because the mean of its divisors is an integer number (2539768).

Almost surely, 2^20795181 is an apocalyptic number.

It is an amenable number.

20795181 is a deficient number, since it is larger than the sum of its proper divisors (9682035).

20795181 is a wasteful number, since it uses less digits than its factorization.

20795181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57312 (or 57301 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 20795181 is about 4560.1733519681. The cubic root of 20795181 is about 274.9925331306.

It can be divided in two parts, 2079 and 5181, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 20795181 in words is "twenty million, seven hundred ninety-five thousand, one hundred eighty-one".